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Table 1 Categories of studies and programs in this review

From: School-based smoking prevention programs with the promise of long-term effects

Category I

 

   High quality studies of

 

   Programs that were successful in reducing smoking in the short term, and

 

   Included significant effects into high school (grades 10–12) or beyond.

 

   Two groups:

 

School-based only

 

School plus community or mass media

 

Category II

 

   High quality studies of

 

   Programs that were very successful in reducing smoking in the short term, and were

 

   Of a large enough scope and sequence to suggest likely medium- and long-term effects

 

   Two groups;

 

School-based only

 

School plus community or mass media

 

Category III

 

   Any studies of

 

   Effects of smoking prevention in developing countries

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